Home / 81,216.36-112,088.86-45,408.48

Finding the Fourth Proportional to 81,216.36, 112,088.86 and 45,408.48

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Solution

The fourth proportional to 81,216.36, 112,088.86 and 45,408.48 is: 62,669.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,216.36 : 112,088.86 = 45,408.48 : x
  2. Step 2: Convert to fraction form
    81,216.36/112,088.86 = 45,408.48/x
  3. Step 3: Cross multiply
    81,216.36x = 112,088.86 × 45,408.48
  4. Step 4: Simplify right side
    81,216.36x = 5,089,784,757.53
  5. Step 5: Solve for x
    x = 5,089,784,757.53/81,216.36
  6. Step 6: Final answer
    x = 62,669.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.